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Keith Busch 9c8fb43419 blk-mq: directly poll requests 
commit 38a8c4d1d45006841f0643f4cb29b5e50758837c upstream.

Polling needs a bio with a valid bi_bdev, but neither of those are
guaranteed for polled driver requests. Make request based polling
directly use blk-mq's polling function instead.

When executing a request from a polled hctx, we know the request's
cookie, and that it's from a live blk-mq queue that supports polling, so
we can safely skip everything that bio_poll provides.

Cc: stable@kernel.org
Reported-by: Martin Belanger <Martin.Belanger@dell.com>
Reported-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Tested-by: Daniel Wagner <dwagner@suse.de>
Revieded-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Link: https://lore.kernel.org/r/20230331180056.1155862-1-kbusch@meta.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-04-13 16:55:31 +02:00
..
partitions
block: don't add partitions if GD_SUPPRESS_PART_SCAN is set
2022-09-03 11:29:03 -06:00
badblocks.c
block/badblocks: Remove redundant assignments
2022-04-23 07:15:26 -06:00
bdev.c
vfs: support STATX_DIOALIGN on block devices
2022-09-11 19:47:12 -05:00
bfq-cgroup.c
block, bfq: fix uaf for bfqq in bic_set_bfqq()
2023-02-09 11:28:06 +01:00
bfq-iosched.c
block, bfq: fix uaf for bfqq in bic_set_bfqq()
2023-02-09 11:28:06 +01:00
bfq-iosched.h
block, bfq: remove unused variable for bfq_queue
2022-10-20 05:46:49 -07:00
bfq-wf2q.c
block, bfq: remove useless parameter for bfq_add/del_bfqq_busy()
2022-08-22 10:07:56 -06:00
bio-integrity.c
block: bio-integrity: Copy flags when bio_integrity_payload is cloned
2023-03-10 09:32:46 +01:00
bio.c
block: clear bio->bi_bdev when putting a bio back in the cache
2023-03-10 09:34:02 +01:00
blk-cgroup-fc-appid.c
cgroup: Homogenize cgroup_get_from_id() return value
2022-08-26 10:57:41 -10:00
blk-cgroup-rwstat.c
blk-cgroup: Fix the recursive blkg rwstat
2021-03-05 11:32:15 -07:00
blk-cgroup-rwstat.h
block: Use the new blk_opf_t type
2022-07-14 12:14:30 -06:00
blk-cgroup.c
Revert "blk-cgroup: dropping parent refcount after pd_free_fn() is done"
2023-03-11 11:03:45 +01:00
blk-cgroup.h
blk-cgroup: pass a gendisk to blkcg_init_queue and blkcg_exit_queue
2022-09-26 19:09:31 -06:00
blk-core.c
block: be a bit more careful in checking for NULL bdev while polling
2023-03-10 09:34:02 +01:00
blk-crypto-fallback.c
treewide: use get_random_bytes() when possible
2022-10-11 17:42:58 -06:00
blk-crypto-internal.h
blk-crypto: show crypto capabilities in sysfs
2022-02-28 06:40:23 -07:00
blk-crypto-profile.c
blk-crypto: remove blk_crypto_unregister()
2021-11-29 06:38:51 -07:00
blk-crypto-sysfs.c
blk-crypto: show crypto capabilities in sysfs
2022-02-28 06:40:23 -07:00
blk-crypto.c
blk-crypto: show crypto capabilities in sysfs
2022-02-28 06:40:23 -07:00
blk-flush.c
block: change request end_io handler to pass back a return value
2022-09-30 07:49:09 -06:00
blk-ia-ranges.c
block: simplify disk_set_independent_access_ranges
2022-06-29 08:36:46 -06:00
blk-integrity.c
blk-crypto: remove blk_crypto_unregister()
2021-11-29 06:38:51 -07:00
blk-ioc.c
block: fix default IO priority handling again
2022-06-27 06:29:12 -06:00
blk-iocost.c
blk-iocost: fix divide by 0 error in calc_lcoefs()
2023-03-10 09:33:46 +01:00
blk-iolatency.c
blk-cgroup: pass a gendisk to blkcg_schedule_throttle
2022-09-26 19:17:28 -06:00
blk-ioprio.c
blk-ioprio: pass a gendisk to blk_ioprio_init and blk_ioprio_exit
2022-09-26 19:09:31 -06:00
blk-ioprio.h
blk-ioprio: pass a gendisk to blk_ioprio_init and blk_ioprio_exit
2022-09-26 19:09:31 -06:00
blk-lib.c
blk-lib: fix blkdev_issue_secure_erase
2022-09-15 00:25:17 -06:00
blk-map.c
block: extend functionality to map bvec iterator
2022-09-30 07:51:13 -06:00
blk-merge.c
block: use proper return value from bio_failfast()
2023-03-10 09:32:47 +01:00
blk-mq-cpumap.c
block: Change the return type of blk_mq_map_queues() into void
2022-08-22 10:07:53 -06:00
blk-mq-debugfs-zoned.c
block: move zone related fields to struct gendisk
2022-07-06 06:46:26 -06:00
blk-mq-debugfs.c
for-6.1/block-2022-10-03
2022-10-07 09:19:14 -07:00
blk-mq-debugfs.h
block: remove per-disk debugfs files in blk_unregister_queue
2022-06-17 07:31:05 -06:00
blk-mq-pci.c
block: Change the return type of blk_mq_map_queues() into void
2022-08-22 10:07:53 -06:00
blk-mq-rdma.c
block: Change the return type of blk_mq_map_queues() into void
2022-08-22 10:07:53 -06:00
blk-mq-sched.c
blk-mq: correct stale comment of .get_budget
2023-03-10 09:32:44 +01:00
blk-mq-sched.h
block: move blk_mq_sched_assign_ioc to blk-ioc.c
2021-11-29 06:41:29 -07:00
blk-mq-sysfs.c
blk-mq: fix possible memleak when register 'hctx' failed
2022-12-31 13:33:03 +01:00
blk-mq-tag.c
sbitmap: fix batched wait_cnt accounting
2022-09-12 00:10:34 -06:00
blk-mq-tag.h
blk-mq: blk_mq_tag_busy is no need to return a value
2022-06-27 06:29:12 -06:00
blk-mq-virtio.c
block: Change the return type of blk_mq_map_queues() into void
2022-08-22 10:07:53 -06:00
blk-mq.c
blk-mq: directly poll requests
2023-04-13 16:55:31 +02:00
blk-mq.h
block: adapt blk_mq_plug() to not plug for writes that require a zone lock
2022-09-29 07:45:47 -06:00
blk-pm.c
scsi: block: pm: Always set request queue runtime active in blk_post_runtime_resume()
2021-12-22 23:38:29 -05:00
blk-pm.h
block: Remove unused blk_pm_*() function definitions
2021-02-22 06:33:48 -07:00
blk-rq-qos.c
block/rq_qos: Use atomic_try_cmpxchg in atomic_inc_below
2022-07-12 14:38:52 -06:00
blk-rq-qos.h
block/blk-rq-qos: delete useless enmu RQ_QOS_IOPRIO
2022-09-21 19:50:53 -06:00
blk-settings.c
block: make blk_set_default_limits() private
2022-11-16 15:58:11 -07:00
blk-stat.c
block: make queue stat accounting a reference
2021-12-14 17:23:05 -07:00
blk-stat.h
block: make queue stat accounting a reference
2021-12-14 17:23:05 -07:00
blk-sysfs.c
blk-throttle: pass a gendisk to blk_throtl_register_queue
2022-09-26 19:17:27 -06:00
blk-throttle.c
blk-throttle: pass a gendisk to blk_throtl_cancel_bios
2022-09-26 19:17:28 -06:00
blk-throttle.h
blk-throttle: pass a gendisk to blk_throtl_cancel_bios
2022-09-26 19:17:28 -06:00
blk-timeout.c
block: blk-timeout: delete duplicated word
2020-07-31 16:29:47 -06:00
blk-wbt.c
blk-wbt: fix that 'rwb->wc' is always set to 1 in wbt_init()
2022-10-09 07:48:16 -06:00
blk-wbt.h
blk-wbt: remove wbt_track stub
2022-03-31 12:58:38 -06:00
blk-zoned.c
block: adapt blk_mq_plug() to not plug for writes that require a zone lock
2022-09-29 07:45:47 -06:00
blk.h
block: Revert "block: Do not reread partition table on exclusively open device"
2023-03-17 08:50:20 +01:00
bounce.c
block: change the blk_queue_bounce calling convention
2022-08-02 17:22:54 -06:00
bsg-lib.c
blk-mq: Drop blk_mq_ops.timeout 'reserved' arg
2022-07-06 06:33:53 -06:00
bsg.c
scsi: core: bsg: Remove usage of the deprecated ida_simple_xxx() API
2022-06-21 21:22:51 -04:00
disk-events.c
block: remove genhd.h
2022-02-02 07:49:59 -07:00
elevator.c
blk-mq: use quiesced elevator switch when reinitializing queues
2022-09-27 09:58:56 -06:00
elevator.h
block: Use the new blk_opf_t type
2022-07-14 12:14:30 -06:00
fops.c
block: don't allow multiple bios for IOCB_NOWAIT issue
2023-03-10 09:34:02 +01:00
genhd.c
block: fix wrong mode for blkdev_put() from disk_scan_partitions()
2023-03-17 08:50:27 +01:00
holder.c
block: remove WARN_ON() from bd_link_disk_holder
2022-06-23 07:48:05 -06:00
ioctl.c
block: fix scan partition for exclusively open device again
2023-03-17 08:50:21 +01:00
ioprio.c
block: Fix handling of tasks without ioprio in ioprio_get(2)
2022-06-27 06:29:12 -06:00
Kconfig
block: remove "select BLK_RQ_IO_DATA_LEN" from BLK_CGROUP_IOCOST dependency
2022-06-29 08:35:57 -06:00
Kconfig.iosched
block: only build the icq tracking code when needed
2021-12-16 10:59:02 -07:00
kyber-iosched.c
block/kyber: Use the new blk_opf_t type
2022-07-14 12:14:30 -06:00
Makefile
blk-cgroup: move blkcg_{get,set}_fc_appid out of line
2022-05-02 14:06:20 -06:00
mq-deadline.c
block: mq-deadline: Rename deadline_is_seq_writes()
2023-01-24 07:24:44 +01:00
opal_proto.h
block: sed-opal: Add ioctl to return device status
2022-08-22 07:52:51 -06:00
sed-opal.c
block: sed-opal: kmalloc the cmd/resp buffers
2022-11-08 07:14:35 -07:00
t10-pi.c
block: add pi for extended integrity
2022-03-07 12:48:35 -07:00